Protective knee pad



FIG. 1 is a perspective view of front, right and top of a protective knee pad embodying our new design;

FIG. 2 is a right side elevational view thereof, the left side being a mirror image of the right side;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof.

The crosshatch surface shading shown on the strap in FIGS. 1-4 and 6 is understood to repeat throughout the indicated area. The strap is shown broken away in FIG. 4 for clarity of illustration. 

The ornamental design for a protective knee pad, as shown and described. 